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Journals / Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi / 2017 / Cilt: 23 Sayı: 8 Özel Sayı

Effect of Nb addition on microstructural and mechanical properties of Ti-Nb based alloys produced by powder metallurgy

Toz metalurjisi ile üretilen biyomedikal Ti-Nb esaslı alaşımlarda Nb ilavesinin mikroyapı ve mekanik özelliklere etkisi

Eren Yılmaz, Azim Gökçe, Fehim Fındık, Hamit Özkan Gülsoy

Pages
945–948
Publication Date
2017-12-28
DOI
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Özet

Normal 0 false false false TR X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Normal Tablo"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri",sans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-ansi-language:TR;} İnsan sert doku ( kemik gibi) biyo-implant malzemeleri için Ti-Nb esaslı alaşımlar biyo-uyumları, mekanik özellikleri, korozyon dirençleri gibi özellikleri açısından umut vadeden malzemelerdir. Bu çalışmada, Nb ilavesinin, Ti-Nb ikili alaşımının mikroyapı ve mekanik özellikleri üzerine etkisinin incelenmesi amacıyla saf Ti, Ti-16Nb, Ti-26Nb alaşımları geleneksel toz metalürjisi yöntemi ile üretilmiştir. Sinterlenmiş numunelerin mikroyapısal gelişimleri ve faz analizleri optik mikroskop, SEM, EDS, XRD teknikleri kullanılarak belirlenmiştir. Sinterlenen Ti-Nb alaşımlarının mikroyapısının widmanstatten α+β yapısından oluştuğu gözlemlenmiştir. Nb içeriğinin ağırlıkça %16’dan %26’ya artışı ile alaşımın mikrosertlik değeri 430 HV’den 327 HV’ye, eğme mukavemeti 1403 MPa’dan 1168 MPa’a ve elastik modül 103 GPa’dan 90 GPa’a düşmüştür. Mikroyapı da ise β-fazı miktarı artarken, taneler incelmiştir. Elde edilen sonuçlar, toz metalürjisi ile üretilmiş Ti-Nb alaşımlarının, klinik uygulamalarda en yaygın kullanılan Ti-6Al-4V alaşımının yerine tercih edilebileceğini göstermektedir.

Keywords
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Cite This Article

Yılmaz, E., Gökçe, A., Fındık, F., Gülsoy, H. Ö. (2017). Effect of Nb addition on microstructural and mechanical properties of Ti-Nb based alloys produced by powder metallurgy. Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi, Cilt: 23 Sayı: 8 Özel Sayı, 945–948. https://ajindex.com/articles/1058840

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